In addition to featuring Nicki Minaj, cameos are also made by Gronkowski, NBA star Karl Anthony-Towns, Bill Walton and some actors. A source said: "Taylorfeels she was backstabbed by the couple and there will be more not-so-subtle hints in the official musicvideo, which will debut Sunday during the VMAs".

The site noted that the "We Are Never Ever Getting Back Together" singer has supposedly gone easy on her former friend on her new album, Reputation, and doesn't have any diss tracks about her following "Bad Blood". "You roll camera and suddenly she plays the doughy-eyed underdog".

A number of fans were majorly pissed at Katy for taking the lazy route, including Sydelko's Youtube co-star Elijah Daniel, who tweeted-and-deleted criticism of Katy's video.

The proof rushes by so quickly you might have missed it - and it's all to do with the mascots at the basketball game in the Space Jam inspired video.

Katy Perry announced her musicvideo release hours after Taylor announced her single release. Yep, the one where Regina plants a lie about Cady to her crush (and Regina's ex) Aaron Samuels to take his attention off Cady and back to her, then traps him into kissing her in front of Cady. I just, you know.

The song is largely thought to be a response to her long running beef with Taylor Swift.